320C and 322C Excavators Attachment Hydraulic System – Bucket Cylinder



Illustration 1 g00765496

(1) Install the seal in the bearing bore until dimension (A) is 1.00 ± 0.50 mm (0.039 ± 0.020 inch).

Quantity … 2

(2) Install the seal in the bearing bore until dimension (B) is 1.00 ± 0.50 mm (0.039 ± 0.020 inch).

Quantity … 2

(3) Torque for locknut … 5900 ± 300 N·m (4352 ± 221 lb ft)

Lubricate the face and the thread of the locknut with 8T-9580 Hydraulic Oil before assembly.

(4) Lubricate the inside diameter and outside diameter of the seals and the ring with clean grease.

(5) Rod assembly

Diameter of rod … 84.93 mm (3.344 inch)

(6) Bore of cylinder … 120.00 ± 0.10 mm (4.724 ± 0.004 inch)

(7) Bore of head … 85.73 ± 0.030 mm (3.375 ± 0.0012 inch)

Note: Make sure that the bearings are installed in the bore so that the identification numbers of the bearings are facing outward.

(8) 163-3748 Sleeve Bearing

Outside diameter … 85.102 ± 0.011 mm (3.3505 ± 0.0004 inch)
Inside diameter … 70.23 ± 0.020 mm (2.765 ± 0.0008 inch)
Install the bearing in the bearing bore. … centered

(9) 163-3751 Sleeve Bearing

Outside diameter … 95.180 ± 0.013 mm (3.7472 ± 0.0005 inch)
Inside diameter … 80.2935 ± 0.0435 mm (3.1612 ± 0.0017 inch)
Install the bearing in the bearing bore. … centered

(10) Lubricate the sealing lip slightly with the lubricant that is being sealed.

(11) Apply 7M-7456 Bearing Mount Compound to the wiper seal groove prior to assembly.